Lawn treatment needing a time to get into ground (8)
I believe the answer is:
aeration
'lawn treatment' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's an association between them I don't understand?
'a time to get into ground' is the wordplay.
'time' becomes 'era' (an era is a period of time).
'to get' says to put letters next to each other.
'ground' indicates anagramming the letters ('grind' the letters into a new form).
'into' with letters rearranged gives 'tion'.
'a'+'era'+'tion'='AERATION'
'needing' acts as a link.
Can you help me to learn more?
(Other definitions for aeration that I've seen before include "The process of adding carbon dioxide to liquid under pressure" , "Mixing with air/gas" .)